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Iron oxides and hydroxides in the weathering interface between Stereocaulon vesuvianum and volcanic rock

Published online by Cambridge University Press:  09 July 2018

P. Adamo ,
C. Colombo  and
P. Violante
P. Adamo
Affiliation:
Dipartimento di Scienze Chimico-Agrarie, Universitá degli Studi di Napoli 'Federico II', Via Universitá, 100 - 80055 Portici (Napoli), Italy
C. Colombo
Affiliation:
Dipartimento di Scienze Chimico-Agrarie, Universitá degli Studi di Napoli 'Federico II', Via Universitá, 100 - 80055 Portici (Napoli), Italy
P. Violante
Affiliation:
Dipartimento di Scienze Chimico-Agrarie, Universitá degli Studi di Napoli 'Federico II', Via Universitá, 100 - 80055 Portici (Napoli), Italy
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Abstract

The nature and composition of the Fe minerals in the rusty ferruginous material frequently located in the zone of contact between the thallus of Stereocaulon vesuvianum and the leucite bearing rock of Mt. Vesuvius have been studied by microscopic and submicroscopic investigations (SEM, TEM with EDXRA) complemented by X-ray diffraction and chemical analysis. Ferrihydrite is likely to be the main component of the short-range order iron oxyhydroxide pool, although the possibility that significant feroxyhite may be present cannot be completely excluded. Hematite and goethite are the crystalline iron oxides. The organic acids produced by lichens play a key role in the enrichment of poorly-ordered phases at the rock-lichen interface. It is suggested that the peculiar morphology of the Stereocaulon vesuvianum thallus and the irregularity of the volcanic rock surface lead to different microsites in the rock-lichen interfaces which have their own conditions of pH, humidity and redox potential, favourable for the neoformation of crystalline phases.

Type
Research Article
Information
Clay Minerals , Volume 32 , Issue 3 , September 1997 , pp. 453 - 461
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1997

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References

Arduino, E., Barberis, E. & Boero, V. (1989) Iron oxides and particle aggregation in B horizons of some Italian soils. Geoderma, 45, 319–329.Google Scholar
Ascaso, C., Galvan, J. & Ortega, C. (1976) The pedogenetic action of Parmelia conspersa, Rhizocarpon geographicum an. Umbilicaria pustulata. Lichenologist, 8, 151–171.CrossRefGoogle Scholar
Carlson, L. & Schwertmann, U. (1980) Natural occurrence of feroxyhite (δ5-FeOOH). Clays Clay Miner. 28, 272–280.Google Scholar
Chao, T.T. & Zhou, L. (1983) Extraction techniques for selective dissolution of amorphous iron oxides from soils and sediments. Soil Sci. Soc. Am. J. 47, 225–232.Google Scholar
Childs, C.W. (1985) Towards understanding soil mineralogy, lI. Notes on ferrihydrite. N.Z Soil Burau Laboratory Report CM, DSIR, New Zealand.Google Scholar
Colombo, C. & Torrent, J. (1991) Relationships between aggregation and iron oxides in Terra Rossa soils from southern Italy. Catena, 18, 51–59.Google Scholar
Drits, V.A., Sakharov, B.A., Salyn, A.L. & Manceau, A. (1993a) Structural model for ferrihydrite. Clay Miner. 28, 185–207.CrossRefGoogle Scholar
Drits, V.A., Sakharov, B.A. & Manceau, A. (1993b) Structure of feroxyhite as determined by simulation of X-ray diffraction curves. Clay Miner. 28, 209–222.Google Scholar
Fitzpatrick, E.A. (1984) Micromorphology of Soils, pp. 1–43. Chapman & Hall, London.CrossRefGoogle Scholar
Galvan, J., Rodriguez, C. & Ascaso, C. (1981) The pedogenetic action of lichens on metamorphic rocks. Pedobiologia, 21, 60–73.Google Scholar
Hawksworth, D.L. (1973) Ecological factors and species delimitation in the lichens. Pp. 31–69 in: Taxonomy and Ecology (Heywood, V.H., editor). Sistematics Association, V.5, Academic Press, London.Google Scholar
Jackson, T.A. & Keller, W.D. (1970) A comparative study of the role of lichens and “inorganic” processes in the chemical weathering of recent Hawaiian lava flows. Am. J. Sci. 269, 446–466.Google Scholar
James, P.W. (1973) The effect of air pollutants other than hydrogen fluoride and sulphur dioxide on lichens. Pp. 147-175 in: Air Pollution and Lichens (Ferry, B.W., Baddeley, M.S. & Hawksworth, D.L., editors). The Athone Press of the University of London.Google Scholar
Jones, A.A. & Saleh, A.M. (1986) Electron diffraction and the study of ferrihydrite coatings on kaolinite. Clay Miner. 21, 85–92.Google Scholar
Jones, D. (1988) Lichens and pedogenesis. Pp. 109-124 in: Handbook of Lichenology (Galun, M., editor). CRC Press, Boca Raton.Google Scholar
Jones, D. & Wilson, M.J. (1985) Chemical activity of lichens on mineral surfaces - A Review. Int. Biodeterioration, 21, 99–105.Google Scholar
Jones, D. & Wilson, M.J. (1986) Biomineralization in crustose lichens. A Review. Pp. 91-105 in: The Systematics Association Symposium on Biomineralization in Lower Plants and Animals (Leadbeater, B.S.C. & Riding, R., editors). Oxford University Press.Google Scholar
Jones, D., Wilson, M.J. & Tait, J.M. (1980) Weathering of a basalt b. Pertusaria corallina. Lichenologist, 12, 277–289.Google Scholar
Koch, C.J.W., Borggaard, O.K., Madsen, M.B. & Morup, S. (1987) Magnetic properties of synthetic feroxyhite (δ'-FeOOH). Proc. Int. Clay Conf Denver, 212-220Google Scholar
Manceau, A. & Drits, V.A. (1993) Local structure of ferrihydrite and feroxyhite by EXAFS spectroscopy. Clay Miner. 28, 165–184.Google Scholar
Mehra, O.P. & Jackson, M.L. (1960) Iron oxides removal from soils and clays by dithionite-citrate systems buffered with sodium bicarbonate. 7th Nat. Conf. Clay Minerals, 317-327.Google Scholar
Parfitt, R.L. & Childs, C.W. (1988) Estimation of forms of Fe and AI: A review, and analysis of contrasting soils by dissolution and Mössbauer methods. Aust. J. Soil Res. 26, 121–144.CrossRefGoogle Scholar
Schulze, D.G. (1981) Identification of soil iron oxide minerals by differential X-ray diffraction. Soil Sci. Soc. Am. J. 45, 437–440.Google Scholar
Schwertmann, U. & Taylor, R.M. (1989) Iron Oxides. Pp. 379–438 in: Minerals in Soil Environments (Dixon, J.B. & Weed, S.B., editors). Soil Science Society of America, Madison, Wisconsin, USA.Google Scholar
Syers, J.K. & Iskandar, I.K. (1973) Pedogenetic significance of lichens. Pp. 225-248 in: The Lichens (Ahmadjian, V. & Hale, M.E., editors). Academic Press, New York, USA.Google Scholar
Wilson, M.J. & Jones, D. (1983) Lichen weathering of minerals: implication for pedogenesis. Pp. 5-12 in: Residual Deposits: Surface-Related Weathering Processes and Materials (Wilson, R.C.L., editor). Special Publ. No.1 1 Geol. Soc., Blackwell Scientific, London, U.K.Google Scholar